Burglar alarm



July 3, 1934.

H. REKONTY BURGLAR ALARM 2 Sheets-Sheet l 3 1 mm W m A A. A. H. a 9

INVENTOR H. REKONTY BURGLAR ALARM July 3, 1934.

Filed May 8, 1933 2 Sheets-Sheet 2 INVENTOR ATTORNEY WITNESS:

Patented July 3, 1934 UNITED STATES IPATENT; OFFICE 1 Claim.

The object of the invention is to provide an alarm apparatus for installation in homes, offices, or other buildings, so that in the event of forcible entry an audible signal will be given attended with an audible statement of what is occurring; and to provide an apparatus of the kind indicated which is of simple form and susceptible of cheap manufacture as well as easy installation.

With this object in view, the invention consists in a construction and combination of parts of which a preferred embodiment is illustrated in the accompanying drawings but to which embodiment the invention is not to be restricted. 'Continued use in practice may dictate certain changes or alterations and the right is claimed to make any which fall within the scope of the annexed claim.

In the drawings:

Figure 1 is a diagrammatic view of the invention.

Figure 2 is a side elevational view of the audible signalling device.

Figure 3 is an elevational view of the structure of Figure 1 but looking at the opposite side of the structure.

Figure 4. is a detail edge elevational view ofthe driving means for the air supply for the audible signal.

Figure 5 is an elevational view partly in section of the talking appliance.

Figure 6 is a top plan view of the structure of Figure 5.

The invention contemplates the installation of an audible signal 10 and a loud speaker 11, the latter being actuated from a sound record mounted on a table 12 through a conventional electrical pick-up 14 which feeds a conventional amplifier 15 with which the loud speaker is connected.

Both the audible signal 10 and the sound record driving means which consists of a motor 16 are controlled by circuit closers such as indicated at 1'7, which are installed at windows, doors, or any places of ingress to the room or building to be protected. The circuit closer 1'7 is serially connected with a battery 18 which, when any one of the connected circuit closers is closed, feeds the driving means for the audible signal 10, the record driving motor 16 and the filament or A side of the amplifying means 15, the B side of which, indicated at 19, is fed from any suitable high potential source.

The audible signal consists of a whistle 20 supported by the end plate 21 of the bellows 22,

the end plate 21 being mounted on a base '23 on which the bellows motor 24 is carried. The movable plate 25 of the bellows has pivotally connected therewith, as at 26, a connecting rod 27, the angular end 28 of which has a pivotal mounting in a disk 29 but adjacent the periphery of the latter. The disk 29 is mounted in common with a gear 30 on a countershaft 31 and is driven by a pinion 32 mounted on the motor shaft. When the motor is set in operation, as it will be when the circuit closer 17 is closed, the disk 29 will be rotated and this rotary movement will be translated into reciprocatory movement of the end plate 25 of the bellows, the air ejected on the contraction of the bellows being forced through a port 33 in the end plate 21 and through the whistle whose mouth is in registration with said port. The whistle will thus be set in operaion.

But the motor 24 is connected in parallel with the motor 16, so that when circuit closing operation results in energizing the former, the latter will also be energized and set in operation, thus rotating the sound record table 12 with which it has an operative connection consisting of a ear train 33.

The motor is provided with a centrifugal governor 34 and a manually adjustable speed regulator 35, so that the speed of the sound record may be adjusted to suit the conditions of the user.

To provide for repetition of the matter carried by the sound record, a repeater disk 36 is employed resting loosely on the upper face of the disk but formed in an opening 37 following generally a radial line and with a track groove 38 of the curved form shown, so that when the stylus of the pick-up reaches a point adjacent the center of the record, it may be. transferred to the groove and returned to a point adjacent the periphery of the record to begin again its inward movement.

Since the audible signal and the record driving motor have their energizing circuit controlled by a circuit closer such as that indicated at 17, the operation of any of the circuit closers by reason of opening a door or window will thus set both the whistle and the sound record in operation, the former attracting attention and the latter, through the loud speaker, repeating any statement it is desired to have emitted from the speaker.

The invention having been described, what is claimed as new and useful is:

In an apparatus of the kind indicated, an audible signal comprising a whistle, a base havbase and having a geared connection with the motor, and a connecting rod having a terminal pivotal connection with the hinged plate at its lower end and a similar connection with the disk adjacent the periphery of the latter, whereby, when the motor is rotated, the hinged plate is oscillated and the bellows caused to eject air through the port and into the whistle.

HARRY REKON'IY. 

